ITBO20130392A1 - EMBOSSING DEVICE, PACKING MACHINE INCLUDING THIS DEVICE - Google Patents

Description

DESCRIPTION

of the industrial invention entitled:

"EMBOSSING DEVICE, MACHINE

PACKAGING MACHINE INCLUDING SUCH

DEVICE"

The present invention relates to an embossing device and in particular to an embossing device intended for a tobacco industry machine, preferably a packaging machine.

The present invention also relates to a method for identifying a web of wrapping material in a packing machine.

A packing machine, intended for making packets filled with smoking articles, such as cigarettes, which will be explicitly referred to without losing generality, includes, among others, an embossing device.

The embossing device is used for embossing a strip of wrapping material, generally aluminum foil or the like, intended, after its division into pieces, to be fed to the wrapping system of the cigarette packing machine.

As is known, in packing machines of this type, the foil web is fed by means of an unwinding system along a determined path up to a cutting system which divides it, according to a cutting line transversal to a direction of advance of the web, in individual lengths, each of which is intended to wrap a group of cigarettes to form an internal wrapping of a respective packet.

As mentioned, the tape, upstream of the cutting system, is subjected to the action of the embossing device schematically consisting of two counter-rotating rollers, one of which is a matrix and one for contrast, arranged on opposite bands with respect to the aforementioned path and tangent to each other. .

These rollers are provided, on their respective cylindrical surfaces, with projections, for example of a truncated pyramid shape, which give the belt, following its passage between them, a characteristic rough shape. In general, on the cylindrical surface of the embossing rollers, there may also be areas without truncated pyramidal ridges or with other types of ridges, to reproduce the desired graphic motifs or writings that appear on each piece of tape and therefore on a portion of the inner wrapper of the cigarette pack.

In order to obtain the correct positioning of the graphic motifs with the group of cigarettes, the embossing device is usually shaped to impress on the tape, for each piece, a reference notch, or centering notch, for the timing of the cutting system with unwinding the tape.

In particular, the centering notch, generally also obtained by embossing, allows the timing of both the unwinding system and the cutting system according to the motif to be imprinted on the belt.

The packing machine comprises an optical system for reading the notch so as to identify a predetermined section of the web. On the basis of the recognition of the section, the cutting system and the unwinding system of the web are controlled in agreement.

The known solutions have some drawbacks.

In the case of uniform embossing, the reference mark consists, for example, of a non-embossed rectangle.

However, when the type of background embossing and / or the material of the ribbon changes, it is necessary to optimize the contrast between the reference notch and the background in order to allow it to be read by the optical reading system.

The center mark can also be obtained, for example, as a uniformly embossed rectangle on non-embossed web or as a non-embossed rectangle within a uniformly embossed frame.

In order to identify and choose the notch that is best readable by the optical system based on the type of material and embossing, it is therefore necessary, in particular by manufacturers of packaging machines, to carry out a series of tests.

These tests, before establishing the specification of the reference mark, require the construction or purchase of embossers with different patterns and reference marks, a series of measurements and tests, the calibration of the optical system.

In this context, the main technical task of the present invention is to propose an embossing device and a packaging machine which are free from the aforementioned drawbacks.

The purpose of the present invention is to propose an embossing device which is more effective in defining a centering reference in the web being processed.

A further object of the present invention is to propose a packaging machine which is more versatile than known solutions.

Yet another object is to propose a method for identifying a reference in a continuous tape which is better implementable than known solutions.

The specified technical task and the specified purposes are substantially achieved by an identification method according to claim 10 and by a packing machine according to claim 15.

Further characteristics and advantages of the present invention will become clearer from the indicative, and therefore non-limiting, description of a preferred but not exclusive embodiment of a packaging machine as illustrated in the accompanying drawings in which:

Figure 1 illustrates a packaging machine according to the present invention, in a schematic perspective view partially in blocks and with some parts removed for greater clarity;

Figure 2 illustrates a portion of the extension of an embossing roller forming part of the machine of Figure 1, in a schematic top plan view;

Figure 3 illustrates a portion of a strip of wrapping material processed in the machine of Figure 1, in a schematic plan view from above.

With reference to Figure 1, the number 1 indicates a packaging machine according to the present invention.

The machine 1 is described hereinafter limitedly to the parts necessary for the understanding of the present invention.

Machine 1 is designed for the production of packets, not illustrated, containing smoking items such as cigarettes.

The machine 1 comprises substantially known and not described means for forming a wrapper for smoking articles starting from a web W of wrapping material.

In particular, the aforementioned wrapping is a wrapping inside the package and the tape W of wrapping material is, for example, a tape in paper material or in metallized paper so-called foil or in metallic material such as, for example, aluminum or similar.

The belt W has a prevailing development direction D and advances in a direction V of advancement.

The forming means comprise, in summary, a system for unwinding the web W, schematized with a block 3, a system for cutting the web into pieces, schematized with a block 4 and a system for bending the lengths, schematized with a block 7 .

The machine 1 comprises a synchronization system, indicated with the reference number 5, of the unwinding system 3, of the cutting system 4 and of the folding system 7.

As will be better clarified below, the synchronization system 5 is configured to identify a section of the tape W based on the definition on the tape W itself of a reference 200 associated with said section, or a reference 200 on the basis of which it is identifiable a section of the belt which determines the actuation of the cutting system 4. In particular, the synchronization system 5 identifies a predetermined section of the web W, for example a cross section thereof, based on the contrast of the reference 200 with respect to the web W. The forming means comprise an embossing device 100 arranged along the path of advancement of the web W, to impart a permanent deformation to the web W of wrapping material.

The embossing device 100 is of a substantially known type and described limitedly to the parts necessary for understanding the present invention.

The device 100 comprises a first embossing roller 101 and a second embossing roller 102 having respective rotation axes R1 and R2. In the example illustrated, with particular reference to Figure 1, it can be observed that the roller 101 rotates in an anticlockwise direction and the roller 102 in a clockwise direction.

The roller 101 and the roller 102 are substantially cylindrical and the axes R1 and R2 are preferably parallel.

The roller 101 and the roller 102 delimit a passage 103 for the strip W and are relatively positioned, in a substantially known manner, to emboss the strip W passing between the rollers 101 and 102 themselves in the passage 103.

In one embodiment, the roller 101 comprises, on its outer surface 101a, means 104 for impressing the web W.

The impression means 104, as will be clarified below, are shaped to imprint the reference 200 on the web W.

In one embodiment, the impression means 104 are shaped to impress a pattern 205 on the web W.

Pattern 205 generally means any finish, written design and the like provided on the inner wrapping of the cigarette packet.

In the example shown, the 205 pattern includes a rough finish of the W tape and the usual â € œPullâ € lettering in the inner wrappers of cigarette packets.

In the illustrated embodiment, the roller 102 is a contrast roller cooperating in a substantially known manner with the roller 101 through its own cylindrical surface 102a.

In an embodiment, not shown in detail and known as a pin up-pin up embossing configuration, the surface 101a has a plurality of impression teeth and the surface 102a has a plurality of impression teeth cooperating with the impression teeth of the surface 101a.

The teeth of the two surfaces 101a and 102a cooperate, for example to satin the web W of wrapping material and the teeth, for example, have a substantially pyramidal shape.

In an embodiment, not shown in detail and known as a pin up-pin down embossing configuration, the surface 101a has a plurality of impression teeth and the surface 102a has a plurality of grooves for housing the teeth of the roller 101.

As mentioned, the impression means 104 are shaped to impress the reference 200 on the tape.

With reference to figures 2, 3, in one embodiment the impression means 104 comprise a first toothing 106 having a first impression for impressing on the band W a first portion 206 of the reference 200 according to a first motif.

Preferably, in one embodiment, the first portion 206 of the reference 200 is embossed on the web W.

In one embodiment, the means 104 comprise a second toothing 105 having a second imprint for impressing the aforementioned pattern 205 on the tape.

The second toothing 105 comprises an area 108 devoid of teeth to define on the band W a second non-embossed portion 208 of the reference 200.

Preferably, the zone 108 develops parallel to the axis R1 of the roller 101 and is formed on the surface 101a of the roller 101 itself.

In practice, the area 108, when the belt W passes in the passage 103, does not imprint any pattern on the belt W itself, leaving it substantially smooth.

As schematically illustrated, on the web W, downstream of the device 100, the motif 205 is imprinted and the portion 208 is smooth, in optical contrast with the motif 205.

As illustrated, the first toothing 106 and the zone 108 are offset from each other considering a direction of the roller 101.

In other words, the first toothing 106 and the zone 108 each lie on distinct directions of the roller 101.

In particular, the first toothing 106 is positioned in such a way as to lie along its entire length, measured along a generatrix of the roller 101, on a first beam 109 of directives of the roller 101.

In particular, the zone 108 lies along its entire length, measured along a generatrix of the roller 101, on a second bundle 110 of directives of the roller 101.

Preferably, the bundle 109 and the bundle 110 do not have directives of the roller 101 in common.

With particular reference to Figure 2, it can be observed that the impression means 104 comprise a third toothing 111, having a third impression, preferably different from the impression of the toothing 106, to impress on the band W a third portion 211 of the reference 200 according to a second reason, different from the aforementioned first reason.

Preferably, in one embodiment, the third portion 211 of the reference 200 is in fact embossed on the web W.

The first toothing 106, the toothless region 108 and the third toothing 111 are offset from each other according to a direction of the roller 101.

In particular, the toothing 111 lies for its entire length, measured along a generatrix of the roller 101, on a third bundle 112 of directions of the roller 101.

The bundle 109, the bundle 110 and the bundle 112 do not have directives of the roller 101 in common.

In a preferred embodiment, the impression means 104 comprise a fourth dentition 113 having a fourth imprint, different from the imprint of the dentition 106 and from the imprint of the dentition 111 for impressing an embossed portion 213 on the web W.

The first toothing 106, the toothless region 108, the third toothing 111 and the fourth toothing 113 are offset from each other according to a direction of the roller 101.

In particular, the toothing 113 lies along its entire length, measured along a generatrix of the roller 101, on a fourth bundle 114 of directions of the roller 101.

The bundle 109, the bundle 110, the bundle 112 and the bundle 114 have no directives of the roller 101 in common.

The impression means 104 comprise a fifth dentition 115 having a fifth imprint, preferably equal to the imprint of the dentition 113, to impress, on the web W, an embossed portion 215.

The toothing 115 lies along its entire length, measured along a generatrix of the roller 101, on the bundle 114 of directives of the roller 101.

The toothing 113 and the toothing 115 are spaced apart along a direction of the beam 114 so as to delimit an area 116 without teeth on the roller 101.

The zone 116 lies in the bundle 114 and is aligned according to a generatrix of the roller 101 with the teeth 106 and 111 and with the zone 108.

The area 116 is provided to define on the web W a fourth non-embossed section 216 of the reference 200.

In the light of the above, in one embodiment, the reference 200 comprises the portion 206, the portion 208, the portion 211 and the portion 216 offset from each other along the prevailing development direction D.

In particular, each section 206, 208, 211 216 of the reference 200 identifies a corresponding band 206a, 208a, 211a, 216a on the belt W. Each band 206a, 208a, 211a, 216a develops in the direction D.

Preferably, the portion 206, the portion 208, the portion 211 and the portion 216 are aligned according to a section of the belt W orthogonal to the direction D.

In one embodiment, the impression means 104 comprise a sixth toothing 117 for impressing on the tape W a code 217 identifying the device 100.

In one embodiment, the machine 1 comprises a reading sensor for each band of the web W in which a portion of the reference 200 is provided.

In the example illustrated in Figure 1, the machine 1 comprises a sensor 6 for reading the band 206a, a sensor 8 for reading the band 208a, a sensor 11 for reading the band 211a and a sensor 16 for reading the band 216a.

The first reading sensor 6 is configured to generate a first reading signal S1 as a function of the reading contrast of the first section 206 of the reference 200 with respect to the web W.

The contrast of the first section 206 with respect to the strip W is, for example, substantially read as an ascending or descending step according to the pattern 205, if present, imprinted on the strip W.

The second reading sensor 8 is configured to generate a second reading signal S2 as a function of the reading contrast of the second section 208 of the reference 200 with respect to the web W.

The contrast of the second section 208 with respect to the strip W is, for example, substantially read as an ascending or descending step according to the pattern 205, if present, imprinted on the strip W.

The third reading sensor 11 is configured to generate a third reading signal S3 as a function of the reading contrast of the third section 211 of the reference 200 with respect to the web W.

The contrast of the third section 211 with respect to the strip W is, for example, substantially read as an ascending or descending step according to the pattern 205, if present, imprinted on the strip W.

The fourth reading sensor 16 is configured to generate a fourth reading signal S4 as a function of the reading contrast of the fourth section 216 of the reference 200 with respect to the section 213 and / or the section 215.

In the example illustrated, the section 215 is upstream of the section 216 according to the direction V of the advancement of the belt and the section 213 is downstream of the section 216 according to the direction V of the advancement of the band.

The contrast of the fourth section 216 with respect to the section 213 and / or 216 is, for example, substantially read as an ascending or descending step.

For descriptive simplicity, reference is made in the following, also for the section 216, to the contrast of the same with respect to the ribbon W and not to the contrast with respect to the adjacent embossed sections 213, 215, meaning however for the section 216 the contrast with respect to the section 213 and / or 215.

Each of the aforesaid steps has a value depending on the reading contrast of the respective portion of the reference 200.

The machine 1, in particular the aforementioned synchronization system 5, comprises a computerized control unit 17 in communication with the sensors 6, 8, 11, 16.

Unit 17 is configured to receive signals S1, S2, S3, S4 and identify the section of the tape W based on signal S1 or signal S2 or signal S3 or signal S4 depending on the reading contrast of the respective length 206, 208, 211, 216 of reference 200 with respect to the web W.

Advantageously, the unit 17 is configured to learn, in a learning phase, for the tape W being processed and for the motif 205 imprinted on it, which part of the reference 200 determines the greatest reading contrast and bases the subsequent selections on the most contrasting section.

Advantageously, using a device 100 as described, a reference 200 is obtained on the tape comprising a plurality of portions 206, 208, 211, 216, each of which can be read independently from the others. By appropriately selecting the motifs of the embossed portions of the reference 200 and considering the presence of the non-embossed portions, the reference 200 comprises at least one portion of certain reading regardless of the pattern on the W tape.

In other words, given the reference 200 composed of a plurality of sections having different motifs and therefore different contrasts with respect to the tape W, the unit 17 always has a signal S1 or S2 or S3 or S4 available, determined by a contrast of the respective section with the web W sufficiently clean to precisely identify the section of web which allows the synchronization of the cutting system.

In alternative embodiments, the embossing device 100 comprises a plurality of teeth for imprinting portions of the reference 200 having different motifs between them to obtain a plurality of contrasts on the web W.

In one embodiment, the reference 200 does not include substantially smooth portions or only comprises embossed portions obtained, for example, by means of toothing of the type 111 or 106.

The reference 200 constitutes in practice a universal reference that can be used in all embossing rollers and which always allows to obtain a reference mark that can be interpreted with relative certainty for each strip W regardless of the material or pattern on it.

In one embodiment, the computerized unit 17 is configured to generate a difference signal between the first and second reading signals S1, S2 and identify said section on the basis of the difference signal.

In practice, by reading, for example, the section 206 and the section 208, the signals S1 and S2 are generated which relate to an embossed section and to a smooth section.

The difference between these two signals simulates a reading with maximum contrast as if it were a reference 200 defined by an embossed section on a smooth, non-embossed band.

In one embodiment, the machine 1, and in particular the synchronization system 5, comprises an identification sensor 18 of the roller 101 communicating with the computerized unit 17.

The sensor 18 is configured to read the aforementioned identification code 217 and generate an identification signal S for the embossing device 100.

The computerized unit 17 is configured to identify the section and synchronize the cutting system 4 with the unwinding system 3 based on signal S1 or signal S2 or signal S3 or signal S4 depending on the identifying signal S.

Unit 17 is configured, once the embossing device 100 mounted on machine 1 has been recognized, that is, the pattern imprinted on the web W based on the S signal is recognized, to select the S1 or S2 or S3 or S4 signal determined by the best contrast of reading.

In practice, the reading of the code 217 allows the unit 17 to learn which of the signals S1, S2, S3, S4 is the one generated by the best reading contrast and select this signal for the identification of the section of the tape W in base on which to drive, in particular at least the web unwinding system 3 W, the cutting system 4 and the folding system 7.

In use, a method of identifying a section of the continuous web W comprises a step of defining on the web W, by embossing, the reference 200 associated with the section so that, based on the identification of the reference 200, the section is identified of the W tape of interest.

The method therefore comprises a step of reading the reference 200 which, as mentioned, comprises, for example, portions 106, 108, 111, 116 which have different contrasts with respect to the tape W.

The sections of the reference are offset from each other considering the direction D so that they can be read independently of each other.

In one embodiment, the reference 200 comprises the non-embossed portion 116 inserted in a sort of frame defined by the embossed portions 113, 115 for a further contrast with respect to the tape W.

In an embodiment, as mentioned, the phase of reading the reference 200 provides for reading all the sections of the reference 200 by means of the respective reading sensors 6, 8, 11, 16 and a selection phase, among the distinct signals S1, S2, S3, S4 generated by the sensors, of the reading signal expression of the higher reading contrast to identify the aforementioned section.

In one embodiment, in the step of embossing the tape W the code 217 is impressed and the step of reading the reference 200 comprises a step of reading the code and all the portions of the reference.

As mentioned, the method provides for selecting the one corresponding to the best contrast from all the signals generated by the reading of the reference portions on the basis of the coding of the device 100.

In one embodiment, the method provides for identifying the section of the reference for which the best contrast with respect to the tape is expected and positioning a reading sensor in correspondence with that section.

In one embodiment, the method provides for identifying the section of the reference for which the best contrast with respect to the tape is expected and, having prepared the reading sensors to read all the sections, use only the sensor in correspondence with the section identified.

Claims (18)

R I V E N D I C A Z I O N I 1) Method for identifying a section of a continuous belt (W) having a prevailing development direction (D) and moving in a direction (V) of advancement according to a predetermined path, said method comprising a step of defining on said tape (W) a reference (200) associated with said section, a step of reading said reference (200) to identify said section by exploiting the contrast of said reference (200) with respect to said tape (W), said method being characterized in that said step of defining a reference comprises a step of embossing said tape (W) by means of an embossing device (100), said reference (200) comprising at least a first portion (206) and a second portion (208), said first portion (206) having a contrast with respect to said ribbon (W) different from the contrast of said second section (208) with respect to said ribbon (W), said first and second sections (206, 208) being arranged on said ribbon (W) along respective bands (206a, 208a) parallel to said direction (D) of prevailing development, said method comprising a step of reading the section of the reference (200) between said first and second sections (206, 208) having greater reading contrast, said section being identified on the basis of the section having the greatest reading contrast. 2) Method according to claim 1, wherein said first portion (206) is an embossed portion, obtained in said embossing step and having a first pattern, and said second portion (208) is a non-embossed portion. 3) Method according to claim 1 or 2, wherein said reference comprises at least a third embossed portion (211), obtained in said embossing step, said third portion (211) having a contrast with respect to said tape (W) different from the contrast of said first and second section (206, 208) with respect to said belt (W), said first, second and third section (206, 208, 211) being arranged on said belt (W) along respectively a first, a second and a third band (206a, 208a, 211a) each parallel to said prevailing development direction (D). 4) Method according to any one of the preceding claims, wherein said reference comprises a fourth non-embossed section (216) arranged on said tape (W) along a respective fourth band (216a) parallel to said prevailing development direction (D), said reference (200) comprising a fifth embossed portion (213) aligned with said fourth portion (216) according to said prevailing direction (D) and arranged downstream of said fourth portion (216) according to said direction (V) of advancement, said reference (200) comprising a sixth embossed portion (215) aligned with said fourth portion (216) according to said prevailing direction (D) and arranged upstream of said fourth portion (216) according to said forward direction (V), said fifth and sixth portion (213, 215) being obtained in said embossing step. 5) Method according to any one of the preceding claims, in which at least said first section (206) and said second section (208) are aligned according to an orthogonal reference direction with respect to said prevailing development direction (D). 6) Method according to any one of the preceding claims, wherein the method comprises a step of impressing a decorative motif (205) on said tape (W), said embossing step realizing said decorative motif (205) and said reference (200), said reference (200) being defined on said ribbon (W) together with said decorative motif (205). 7) Method according to any one of the preceding claims, in which said reading step of said reference (200) provides for reading all the portions (206, 208, 211, 216) of said reference (200) by means of a sensor (6, 8 , 11, 16) of reading for each section (206, 208, 211, 216), the reading of said first section (206) generating a first reading signal (S1), the reading of said second section (208) generating a second reading signal (S2), the reading of said third segment (211) generating a third reading signal (S3), the reading of said fourth segment (216) generating a fourth reading signal (S4), each signal (S1 , S2, S3, S4) of reading being generated as a function of the reading contrast of the respective reference segment (206, 208, 211, 216), said method comprising a selection step between said first, second, third and fourth signals ( S1, S2, S3, S4) of reading of the reading signal expression of the greater reading contrast to identify said section. 8) Method according to any one of the preceding claims, in which said embossing step of said tape (w) provides for imprinting on said tape a code (217) identifying said embossing device (100), said step of reading said reference providing reading said identification code by means of an identification sensor (18) and all the portions (206, 208, 211, 216) of said reference (200) by means of a reading sensor (6, 8, 11, 16) for each portion, the reading of said identification code by generating a signal (S) identifying said embossing device, reading of said first section (206) by generating a first reading signal (S1), reading of said second section (208) by generating a second signal ( S2) for reading, the reading of said third portion (211) generating a third reading signal (S3), the reading of said fourth portion (216) generating a fourth reading signal (S4), each signal (S1, S2, S3, S4) of reading essen do generated as a function of the reading contrast of the respective reference segment (206, 208, 211, 216), said method comprising a selection step, to identify said section, of the first reading signal (S1) or of the second reading signal (S2) or of the third reading signal (S3) or of the fourth reading signal (S4) in operation of said signal (S) identifying said embossing device. 9) Method according to any one of claims 1 to 6, wherein said step of reading said reference (200) provides for selecting the segment between said first segment (206), said second segment (208), said third segment (211) or said fourth section (216) of said reference having the greatest reading contrast with the tape compared to the others, positioning a reading sensor (6, 8, 11, 16) to read the selected section, identifying said section based on the reading of the selected section. 10) Embossing device comprising a first embossing roller (101) and a second embossing roller (102) defining a passage (103) for a web (W) of wrapping material to be embossed, said web (W) presenting a direction (D) of prevailing development and a direction (V) of advancement, said first embossing roller (101) and said second embossing roller (102) being relatively positioned to emboss said web (W) passing through said passage (103), at least said first roller ( 101) embosser comprising on its external surface (101a) means for impressing a reference on said tape (W) to identify a section of said tape (W), said device being characterized in that said impression means comprise a first toothing (106) having a first impression for impressing on said tape a first portion (206) of said reference according to a first motif; at least one second toothing (105) having a second imprint for impressing on said belt a decorative pattern (205), said second toothing (105) comprising a toothless area (108) to define on said belt a second section (208) not embossed of said reference, said first toothing (106) lying on a first bundle (109) of directives of said first roller (101) and said zone (108) lying on a second bundle (110) of directives of said first roller (101 ). 11) Device according to claim 10, wherein said impression means comprise at least a third toothing (111) having a third imprint for impressing on said belt a third portion (211) of said reference (200) according to a third motif, said third toothing (111) lying on a third bundle (112) of directives of said first roller (101). 12. Device according to claim 10 or 11 wherein said impression means comprise a fourth toothing (113) having a fourth imprint for impressing a fifth embossed portion (213) on said tape; a fifth toothing (115) having a fifth imprint for impressing a sixth embossed portion (215) on said tape; said fourth and fifth toothing (113, 115) being aligned according to a direction of said first roller (101) and delimiting a second region (116) without teeth along said direction to define on said belt a fourth non-embossed section (216) of said reference (200), said fourth and fifth teeth (113, 115) and said second zone (116) devoid of teeth lying on a fourth bundle (114) of directives of said first roller (101). 13) Device according to any one of claims 10 to 12, wherein said first toothing (106) and / or said third toothing (111) and / or said first toothless region (108) and / or said second region (116 ) without teeth are aligned according to a generatrix of said first roller (101). 14) Embossing device according to any one of claims 10 to 13, wherein said impression means comprise a sixth toothing (117) for impressing an identifying code (217) of said embossing device on said tape (W). 15) Packaging machine for the production of packages comprising smoking articles, said packaging machine comprising means (3, 4, 7, 100) for forming an envelope for said smoking articles starting from a strip (W) of material to be wrapping, said forming means (3, 4, 7, 100) comprising a web unwinding system (3) (W), a web cutting system (4) (W) and an embossing device (100) for said wrapping material, said machine comprising a synchronization system (5) for at least said unwinding system (3) and said cutting system (4), said packing machine being characterized in that said embossing device (100) is of the type according to any one of claims 10 to 14, said synchronization system (5) being configured to synchronize said unwinding system (3) and said system ( 4) cutting as a function of the position of said section identified by said reference (200). 16) Packaging machine according to claim 15, wherein said synchronization system (5) comprises at least a first and a second sensor (6, 8) for reading respectively said first section (206) of said reference and said second section (208 ) of said reference (200), said first reading sensor being configured to generate a first reading signal (S1) as a function of the reading contrast of said first section of said reference with respect to said tape, said second reading sensor being configured to generate a second reading signal (S2) as a function of the reading contrast of said second section of said reference with respect to said tape, said synchronization system (5) comprising a computerized control unit (17) in communication with said first and second reading sensors (6, 8) and configured to receive said first and second reading signals (S1, S2) said computerized unit (17) being configured to identify said section on the basis of the first reading signal (S1) or the second reading signal (S2) as a function of the reading contrast of the respective section (206, 208) of the reference with respect to said tape (W). 17) Machine according to claim 16, wherein said synchronization system comprises an identification sensor (18) of said embossing device (100) in communication with said computerized unit (17) and configured to read said identification code (217), said sensor identification by generating an identification signal (S) of said embossing device (100), said computerized unit (17) being configured to identify said section based on the first reading signal (S1) or on the second reading signal (S2) as a function of said identifying signal (S). 18) Packaging machine according to claim 15, wherein said synchronization system (5) comprises at least a first and a second sensor (6, 8) for reading respectively said first section (206) of said reference and said second section (208 ) of said reference (200), said first reading sensor being configured to generate a first reading signal (S1) as a function of the reading contrast of said first section of said reference with respect to said tape, said second reading sensor being configured to generate a second reading signal (S2) as a function of the reading contrast of said second section of said reference with respect to said tape, said synchronization system (5) comprising a computerized control unit (17) in communication with said first and second reading sensors (6, 8) and configured to receive said first and second reading signals (S1, S2) said computerized unit (17) being configured to generate a difference signal between said first and second reading signals (S1, S2) and to identify said section on the basis of said difference signal.